Use this video distributor, to the image of 4 cctv security cameras with bnc connection via coaxial cable to send 1.This is useful if it is impossible, or too precious to extra cables, just use the existing cable of a cctv security camera.This 4x cctv camera on one rg59 coaxial cable is intended for analog cctv surveillance cameras and does not work with other signals.A Sony 700tvl cctv security camera image is so no problem.Save on cable costs and time, use this to send images via multiple surveillance cctv mux 1 cable!